The dinosaurs and numerous other reptiles which had previously been dominant were extinct.
先前曾占主位的恐龙以及许多其他爬行动物到了这时都绝灭了.
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Standing on a volcanic crater , even that of an extinct volcano, is very dangerous.
别看是死火山, 站在火山口也是很危险的.
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在生物进化框架中, 体质人类学和现存的及已灭绝的物种有密切关系.
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If you want a list of Ron Artest'enemies, just check the extinct species list.
如果你要阿泰敌人的列表, 那就去查已灭绝物种列表.
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Tentative attempts to use cloning to bring back extinct species are already under way.
用克隆手段来使灭绝动物重新回到世界上的尝试工作已经开始.
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The giant panda is an endangered species , ie is in danger of becoming extinct.
大熊猫是面临绝种危险的动物.
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Hesperornis is an extinct genus of flightless aquatic birds that lived during the Late Cretaceous.
黄昏鸟是一种已经灭绝的不会飞翔的水鸟,生活在白垩纪晚期.
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A large extinct ground sloth of the family Megatheriidae of the Miocene Epoch through the Epoch.
大懒兽中新世至更新世时期大懒兽科之栖于地面的已绝迹的大树懒.
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Such animals shall become extinct through unexplained forms of diseases in the next quarter century.
这样的动物在下四分之一世纪将通过无法解释的疾病被绝灭.
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He put forward the hypothesis that the bones belonged to an extinct type of reptile.
他提出一个假说,说那些骨头属于一种已绝种的爬行动物.
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